cc: Use correct message loop proxy in BlockingTaskRunner

cc/trees/proxy.h

Index: cc/trees/proxy.h
diff --git a/cc/trees/proxy.h b/cc/trees/proxy.h
index 112c259dc47c04bb6eb3f45f9c517390f885c741..126a311a795f239593c515c359cd8eb27b3bbd5e 100644
--- a/cc/trees/proxy.h
+++ b/cc/trees/proxy.h
@@ -15,6 +15,7 @@
 #include "base/time/time.h"
 #include "base/values.h"
 #include "cc/base/cc_export.h"
+#include "cc/trees/blocking_task_runner.h"
 
 namespace base {
 namespace debug {
@@ -103,6 +104,10 @@ class CC_EXPORT Proxy {
   // Testing hooks
   virtual bool MainFrameWillHappenForTesting() = 0;
 
+  scoped_refptr<BlockingTaskRunner> blocking_main_thread_task_runner() const {

[danakj, 2014/08/28 17:10:46]

could this return a raw pointer?

[Sami, 2014/08/28 18:21:17]

Yep, done.

+    return blocking_main_thread_task_runner_;
+  }
+
  protected:
   Proxy(scoped_refptr<base::SingleThreadTaskRunner> main_task_runner,
         scoped_refptr<base::SingleThreadTaskRunner> impl_task_runner);
@@ -113,6 +118,8 @@ class CC_EXPORT Proxy {
  private:
   scoped_refptr<base::SingleThreadTaskRunner> main_task_runner_;
   scoped_refptr<base::SingleThreadTaskRunner> impl_task_runner_;
+  scoped_refptr<BlockingTaskRunner> blocking_main_thread_task_runner_;
+
 #if DCHECK_IS_ON
   const base::PlatformThreadId main_thread_id_;
   bool impl_thread_is_overridden_;